Materials | Glass Ceramics | Corning® PYROCERAM® Glass Ceramic

Glass Type: Glass Ceramics

Description

Corning® PYROCERAM® is a transparent glass-ceramic having almost a zero thermal expansion. It is an excellent choice for applications when there is the probability of high heat and cold shock. PYROCERAM® is widely used for residential applications such as fireplace and wood burning stove windows, oven windows, broiler windows and other such appliances. PYROCERAM® is also used in architectural and outdoor lighting, electronics, UV light-wave blocking applications and chemical process sight glass.

Thermal Properties			Mechanical Properties
Thermal Coefficient of Expansion	0± 3.0 x 10-7 K-1	Density	2.51 g/cm3 (at 20°C/68°F)
Annealing Point	547°C/ 1017° F	Knoop Hardness	705 kg/mm2
Softening Point	N/A	Young's Modulus	94.3 Gpa
Strain Point	700°C/ 1292° F	Poisson's Ratio	0.25

Thermal Properties

Mechanical Properties

Thermal Coefficient of Expansion

0± 3.0 x 10-7 K-1

Density

2.51 g/cm3 (at 20°C/68°F)

Annealing Point

547°C/ 1017° F

Knoop Hardness

705 kg/mm2

Softening Point

N/A

Young's Modulus

94.3 Gpa

Strain Point

700°C/ 1292° F

Poisson's Ratio

0.25

Chemical Properties			Electrical Properties
Hydrolytic Resistance	Class1	Dielectric Constant	E=8.1 MHz @R.T.
Acid Resistance	Class1	Resistivity	log10 ρ 6.8 at 250° C (482°F)
Alkali Resistance	Class1	Dielectric Strength	N/A

Chemical Properties

Electrical Properties

Hydrolytic Resistance

Class1

Dielectric Constant

E=8.1 MHz @R.T.

Acid Resistance

Class1

Resistivity

log10 ρ 6.8 at 250° C (482°F)

Alkali Resistance

Class1

Dielectric Strength

N/A

Optical Properties
Refractive Index	1.55

Optical Properties

Refractive Index

1.55